Boiler



Patented July 27; 1926.

YE-NT on?! zoimr; sLA'rmtoF oniimnnnhun HENRY A. KLEIN, or BE nvUn,iowh."

BOILER. Application m December 2 ,1919.- seri 1"1'vo.s4s,iis. f

' Our invention irelates. .toboilers, and has for an ob ect tov improvethe construction.

and efficiency of this: class of structures, and

to provide a portable boiler, capable of use" for generating :steam. forlight engines, and especially foruheating flats, dwellings, businessplaces, orflthe like,, either by .-;steam or hot water.

Among I I tion are to provide aboiler in which the heated gases andproducts of combustion arebrought into contact; with-1a greater portionof the .water carrying, parts of the honey to more quickly heat the sameto provide an. improved hopper and .fire box construction below themagazine, "and to regulate the entry '[and distributionot. air to thefire to give a substantially perfect combustion and smoke consumptiongtogeifect a material saving in .fuel consumption, andfmakeipossible lthe eificientuse of practically any grade of bination, construction}andiarrangementof coal; the provision of a novelarrangement o ter; u e Qbs rb h ma im m amount of heat from the gases of combustion; to produoe'a-, more simple, economical y and eflicaciousfboiler, capable ofuseeither. for generating steam-orheating water; and such further objects,:.advantagesand.capabilities as wilLlater-more fully appear... 3

Our invention further (resides in the com I parts illustrated in theaccompanying drawings, and whilefwe have shown therein a; preferredembodiment, we desire itfto be understood that thesame is susceptible ofmodification and change, without departing froin the spirit of ourinvention] f I In the drawings "Fig. 1 is a vertical transverse: sectionthrough .a', median plane f of our "improved boiler, "a slightIportioriof the upper left sakeof clearness- I 7* F g. 2 1s alfragme hand cornerbeing shownineleva-tion for the Fig. i 1, but taken, on a median planeat; sub.

stantially right angles to that ofFig. f1.

' Fig. 3 is afhoriz ontal transversesect ion through the boilerat' anintermediate point.

Fig. .4: isza fragmentary horiaontail trans verse section, showing thearrangement ofv one of the airpipes for passage of "air from theexterior to a point overthe fire.

As will be seenv from Fig. 1, :our improved the further objects of ourinven J i tary sectional viewof." the bottom portiongof, the boilersimilar to the wall 2i' concentric therewith, .but inwardly therefrom a.suitable distance; to

providethe water receivingspace 3'. Qona:

centric-o with the outer: water leg, but spaced 1 inwardly therefrom, isthe inner water'ileg'." I

composed of the inner wall 4:, ai1dthew llE 5l concentric therewith, butsp'aced outwardly waterreceiving space 6.,, v.

Connecting and estabhshmg' communica therefrom a suitable distance to,.form the tion between the outer waterfleg and the in net-water leg,atithe upper portionf are the tubes 7, andat the lower portion the waterllb'es 8. Thetubes '7 will or will not (be filled with water,dependingon how high the water level is maintained inithe boiler.

If the boiler-is used ,forfsteam' purposes, it

it' isobvious a suitablesteamqspace will be left above the" level ofthewater, while if 5.11 of the tubes. 1

r The space within the inner-wall t forhris a ruetmagazine 9,provided-at its upper end,

with the removable cover: 10, .for-the introduction of fuel .thereinto,In.addition to.

tubes '7 and8 there are other watertubes 1 1,

extending radially from the l inner water leg, andv closed at theirouter ends,;as shown in Figs. 1, 2 and 3. Thewater in the tubes 11- isthus positioned. to be quicklyheated by v the transfer of heat; throughthe tubes 11,

from the heated gases and-products of com an obvious manner.

ff Attached Ito the 1061191 at? a fconven ient point is the steam gauge1% whichmay hbe.

of any type desired to suit. the required 7 conditions. When the l xilertis used merely as awater heater, suchflsteam gaugemay,,;of

' bustion passing. upwardly -through the (com,- bustionchamber12,:whichextendslfrom the fire tol'substantiallyfthe. topoftheboiler,-

fromjwhich the combustion gases are led;to

the stack, throughthe pipe,connectioii 13, in f course, be omit-ted. fAtthelowerend ofthe outer water leg is the intake -pipe 15, throughwhich water-may be suppliedftq the boiler, and at the upper; end of theinner 'waterjleg is the. outletpipeLlfito conduct awaythe steam or hotwater from the boiler, to the place. of consumption. LWhenjthe" boileris used in a hot waterheating} plant, -th e ,circua lation of water willbe outwardly. from the boiler through outlet Various radiators and otherpassages, and back through pipe 15, to the lower part of the boiler.

Below the lower end of the flue magazine 9, is the fire box 17 in whichis provided the hopper 18, which may be built of fire brick or othersuitable material, and the opposite faces 19 and 20 of which, as shownin grate 23, below which is the ash pit 24, pro

vided with door 25. Through one of the walls of the hopper 18, is thepassageway 26, opening into the hopper just above the grate 23, andprovided with door 27. Above the passage 26, and approximatelyat theupper end of the'hopper, is the opening 28, controlled by closure 29,which may obviously, if desired, be in the form of a door, or othersuitable enclosure, capable of operation, to control the entry of air tothe combustionchamber.

Passing through the walls 1 and 2 of the outer water leg, at a pointnear the top of the hopper, as shown in Fig. 2, isthe air inlet pipe 80,which extends to a point well within the fire boxand directly over thefire.

Pipe 30 is provided at its outer end with the closure 31, which may behinged or movably mounted in any suitable manner to permit its beingopened or closed, to regulate the entry of air from without, throughpipe 30, to a point directly over the fire. Any suitable number of theseair pipes 5 0 may be provided, and the amount of air passingtherethrough for discharge over the fire will be regulated by operationof closures 31, to permit more or less air to pass into the fire box, asdesired. Doors 25, 27 and 29, and closure 81, may if desired, beprovided with sliding grates, or of any other suitable construction toregulate the passage of air therethrough. The fire can be cleaned eitherthrough the grates or the space at the bottom of the hopper.

Referring to Figs. 1 and 3, it will be seen that in our improved form ofboiler, the combustion gases will pass upwardly from the fire, throughthe combustion chamber, and around the water tubes, in such manner as tocome in contact with the maximum amount of exposed water retainingsurface, whereby to greatly increase the steaming or heating ability, toabsorb the 'maximum amount of heat from the fire, and to greatlyincrease the economy of operation of the boiler. The fuel will feeddownwardly in an obvious manner, into the hopper 18, and by suitablemanipulation of doors 25, 27 and 29 and closure 81, we are enabled tosecure within the fire box perfect combustion and smoke consumption.

We consider the air intake pipe 30 of great importance, since through itair may be admitted to the fire at a point and in such quantities togive the proper mixture of oxygen with the combustion gases to produceperfect combustion. Vith this arrangement we are enabled to admit air tothe fire, either from below the grate, above the grate at the bottom ofthe hopper, above the grate at the top of the hopper, or through thepipes 30 to a point directly over the fire, or any of the obviouscombinations possible from such arrangement, as desired; thus addinggreatly to the flexibility of the fire control, and enabling theoperator to easily respond to any requirements of the fire to giveperfect combustion.

I Having now described our invention, we

claim 1. In a boiler, a vertically arranged cy-' a lateral openingextending through the lower portion of the hopper and the shell justabove the grate, adjustable meansfor admitting or excluding air to theinterior of the bottom ofthe fire through said lateral opening, one ormore openings through said shell at the upper level of the hopper toadmit air just above the fuel bed, adjustable means for admitting orexcluding air through said last mentioned openings, whereby anycombination of admission or exclusion of air below the grate, above thegrate at the bottom of the'hopper, or above the hopper may be effectedas desired.

' 2. A boiler of the character described comprising an outer fluidcontaining shell, a fuel magazine consisting of an inner fluidcontainingshell enclosed within and concentric with said outer shell, meansproviding communication between said shells, a fire box enclosed by theouter shell and located below the'lower end of the inner shell so thatthe products of combustion will pass upwardly through the space betweenthe shells, a hopper in said fire box, means providing an outlet forsaid products of combustion, a grate in said fire box below said hopper,and means by which air may be selectively admitted through said outershell into said fire box at a position above the grate and at the bottomof the hopper and at a position above the grate contiguous to the top ofthe hopper, and directly over the fire therein.

3. A boiler of the character described comprising an outerfluid-containing shell, a fuel magazine consisting of an inner shellenclosed within and concentric with said outer shell, means providingcommunication within said shell, a fire box enclosed by the outer shelland located below the lower-end of the inner shell so that-the productsof combustion will pass upwardly through the space between'the shells, ahopper in said fire box, meunslproviding an outlet for the products ofcombustion, agrate in said fire box below said hopper, said outer shellhaving openings positioned to introduce air into the fire box atpositions 'contiguous to the bottom end the top of the hopper respectivei 1y, means controlling admission of. air through said openings, and anair inlet tube In witness whereof, we hereunto subscribe our nanoes ,tothis specification.

' HENRY A, KLEIN.

a" if JOHN F. SLATER. i

